This Vibra Schultheis SRK 8 12-I-S-D is a laboratory vibro sieve — also known as a vibratory screen or screening machine — used to separate, classify, or check bulk materials by particle size through controlled mechanical vibration. Vibra Schultheis is a well-established German manufacturer specialising in precision weighing, screening, and feeding technology for laboratory and industrial applications, serving sectors such as pharmaceuticals, food processing, chemicals, and materials research.
The machine is built entirely in stainless steel, combining grade 1.4301 (equivalent to AISI 304) and grade 1.4306 (equivalent to AISI 304L), making it well suited to hygienic or corrosion-sensitive environments. It features a single sieve deck with a sieve surface of 0.63 m², and the sieve panel itself measures 700 mm by 900 mm. The sieve perforation is 7 mm, indicating the particle size at which separation occurs. The inlet dimensions are 1,130 mm by 2,250 mm and the outlet measures 800 mm by 1,150 mm.
Vibration is generated by two vibro motors, each rated at 0.70 kW, operating at 1,450 rpm and compatible with supply voltages of 218–240 V or 380–420 V, giving the unit flexibility for use across different electrical installations. The machine is mounted on a mild steel support frame, which brings the total height to 1.60 m. The required floor space is 2.0 m by 2.0 m, and the unit carries serial number 41498/1. It is located in Barneveld, Netherlands, and was manufactured in 1999.
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